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Finding the Fourth Proportional to 6,600.77, 9,887.38 and 3,959.90

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Solution

The fourth proportional to 6,600.77, 9,887.38 and 3,959.90 is: 5,931.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,600.77 : 9,887.38 = 3,959.90 : x
  2. Step 2: Convert to fraction form
    6,600.77/9,887.38 = 3,959.90/x
  3. Step 3: Cross multiply
    6,600.77x = 9,887.38 × 3,959.90
  4. Step 4: Simplify right side
    6,600.77x = 39,153,036.06
  5. Step 5: Solve for x
    x = 39,153,036.06/6,600.77
  6. Step 6: Final answer
    x = 5,931.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.